Oscillating motor



W. '1; O'LEARY. ociLLAT1NG MOTOR." APPLICMION FILED FEB. 2s, Isls.

l v327,250, l Patented Jan. 6, 1920.

z SHEETS-SHEET i.

| l A 'u ngNToR W- J. OLERY.

OSCILLATING MOTOR.

APPLICATION FILED Fmzs. |918.

Patented Jan. 6, 1920.

-2 SHEETS-SHEET 2.

UNTTED STATES PATENT oEErcE.

WILLIAM J. OLEABY, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR T0 MARGUERITE V. OLEARY, 0F MONTREAL, QUEBEC, CANADA.

OS-CILLATING( MOTOR.

Specification of Letters Patent.

Patented J an. 6, 1920.

Application led February 28, 1918. Serial No. 219,627.

To all whom t may concern.'

Be it known that I, WILLIAM J. OLEARY, a subject of the King of England, residing at Montreal, Dominion of Canada, have made a certain new and useful Invention in Oscillating'Motors, of which the following is a specification.

This invention relates broadly to me` lated whereby the effectivev power is oontinuously applied vto saidmember first in one direction and then in .the opposite direction.

Still more specicallythe present invention comprises a mechanism of the character specified wherein .the motive power 1s a vibration motor with the vibratory band b ifurcated and havin one'part'extending in one direction aroun the member to be osclllated, and the other part extending in the opposite direction around the member to be oscillated.

A still vfurther and equally important object of the present invention' comprises a mechanism of the character previously sperified and wherein the anchored ends of the vibrator-y band are'operatively connected with a mechanism which alternately loosens and tensions the said band whereby while one `)art is tensioned, the other partis loosenec.

A still further object of the present invention is a device ofthe character specified and wherein the tensioning on the band renders .it'efective, while the loosening of the band renders the same ineffective, so that it will be, noted that since the bands pass in different directions around the member to be oscillated, and since the bands are alternately rendered effective and ineffective, the said member will be alternately rotated in opposite directions.

More specifically the resent invention comprises an energized vi rating fork having a pair of vlbratory bands Opelltlvely the object of the presconnected to the vibrating forkwith one of said, bands' passing in vone direction around a pulley to be driven, the otherof sald bandsv passing in the other direction around the pulley to be driven, and with the ends-of said bands secured to a tension con-. trolhng device .whereby one of said bands 1s tlghtened around the pulley, while the other ,of said bands is loosened, this causing i lthe tightened band to be effective to drive the pulley, and the. loosened band to be ineffective.

A more specific, though preferred form, of the present invention comprises a device of the character previously specified where- 1n the vibrating fork is energized through the medium of 'an electro-magnet, and while the electro-magnet may be adapted to be operated by 'any type of electrical current, i

the preferred form herein illustrated is adapted for operation by an alternating current, the frequency of which is substantially coincident with the natural period of vibration of the vibrating fork. v Other and further Vobjects ofthe present lnvention will in part be obvious and will in, partbe pointed out hereinafter in the specication following by reference to the accomp'anying4 drawings wherein like parts are represented by like characters throughout the several figures thereof.

Figure 1 is a plan view more especially illustrating the motor without reference to 4the details for tightening the band.

Fig. 2 is a detail view illustrating in perspective one type of mechanism for controlling the tension on the bands.

Fig. 3 is a plan detail view of the same tensioning device shown in Fig. v

Fig.4 4 is an elevational view showing one side of the vibrating fork brokenv away to more clearly illustrate the relation of the vibratory 'bands and tightening mechanism for the bands.y v

Oscillatorymechanism more particularly as applied to washing machinesfchurns, and the like, heretofore in the art may be divided broadly into two classes, one class `comprising mechanisi'ns wherein an oscillatory motion of a fixed non-adjustable period is provided through th'e medium of a continuously rotating member; this class vincludes pitmen, cranks,.and cams. The second class comprises devices for producing oscillatory motion by permitting a I'Oniion motion for I a predetermined period of time and then vided in the pu suddenly stopping and reversing the said rotating motion. Thistype includes belt shiftv ing devices, or gear change devices usuallyY under' control of some separate periodic' determining devices. These devices are usually susceptibleof adjustment.. The device comprising the present invention relates Y more particularly to the second class but is widely different in operation from any known device in either class. Y

The present Ainvention is characterized more particularly by the continued application ofpower to a vibrating member and 'the alternate application of power from the vibrating member to the member to beosclllated and wherein the power is applied through a vibratory band.A

One preferred embodiment of the present invention comprises a tuned fork of elastic material, vpreferably steel, with a simple electro-magnet Aor solenoid having a soft iron core with the poles ofthe core betweenthe arms of the fork, and wherein the of the fork substantially corresponds to a standard alternating current of say sixty (60) cycles per second. This arrangement provides a construction lwhereby application of suitable alternating electric. current to the electro-magnet causes continued vibration'of the fork. A pair of connecting members, preferably of shellacked leather, are attached to each prong of the "fork and joined together with vibratorybands secured to these members at their junction. These vibratory bands are passed around a rotar'y member which may comprise a pulley, one band being on one side of the' pulley and the other band being on the other side.

The free ends of these bands preferably carry light coiled vsprings'which in turn are anchored to posts onan oscillating plate; thev purpose of these springs is to maintain a suitable tension on the bands when theV springs are extended. The oscillating plate is adapted to be latchedand held at its extremity of oscillation. A pair of springs Aone on each side of said plate aresecure to the plate and'to a relatively large sized control pulley. This pulley is provided with pins which may be 'inserted in holes proley' and which pins are con-Y structed to contact with the latches, so that as the control pulley revolves one ofthese.-

pins strikes the latch and lifts the same permitting the tensioned spring to swing the latch to its other extreme limit of oscillation, at which point it is again secured by the other latch. This swinging of the plate reverses the tension on the vibratory bands and thus reverses the motion of the member being driven. The control pulley is driven by a band from a small ulley carried by the 'shaft which carriv Figlie member being The fundamental principle of the motor comprising a part -of this invention may be better understood by reference to Melde?s:,ex periment (Watsons Pkg/ses, 4th edition, page 402), wherein a tuning fork isprovided with a vibratory string tensionedby'weights.

of thefork. When the weights arestationf- 'When this experiment is being carried. out the weights are substantially stationary'ie'x-V cept atl the verybeginning of the vibration, i

ary the weighted end of 'the string 'is subs t e by the fork vibration.

. principle of the motor herein disclosed.

Referring now more particularly to the drawings, the motor frame 1 carries a vibrating'- fork 2, the prongs of which are suitably weighted, as'at 4, to synchronize the vibration of the fork withthe alternations ofthe circuit with which the motor is adaptf .ed to be energized. .A solenoid or electric Acoil' is mounted between the forks with the le 'pieces '6 and Z of the ycore 8 extending tween the fork so that when the 'solenoid is energized by Ia suitable alternating current the magnetism acting through the pole pieces 6 andv 7 vibrates the prongs of the fork 2. A pair of connectorstraps 9 and '10, which may'comprise shellacked leather straps or other isuitable material, are riveted, as at 11 and 12, to the inner sides of the prongs of the fork 2, and have their free ends joined together by means of a rivet or other suitable connector 14, with a pair of vibratoryba'nds 15 and 16secured between vibratory bands extend upon opposite sides and encirclethe pulle .17 which comprises the memberl to be osci lated, and have theii` free ends 19 and 20, respectively, connected through coiled springs 2l and 22 to anchor posts 23 and 24. carried by the swinging ,-'plate 25. This swinging plate 25 is mounted to freely. turn I,on a stub screw or post 26 and may 'be provided with an arm 27 which is adated to latch into and be held by notche levers 28 and 29. These levers are pivoted on posts comprising stub screws 30 and have extensions 31 and 32 against which the leaf springs 34 and 35 bear to maintain the extensions a ainst the sto screws 36 and 37. The sha 38 ofthe drive pulley 17 carries a small band Eulley 39 which is cont nected, a driving d or belt 40, with a Y' the free ends ofthe straps 9 and' 10. -These :relativelylarge control wheel 41. Thisl control wheel rotates idly upon a post carrying` the stub screw 26 and/lis provided with rows of openings 42 and 44. f These openingscomprise receptacles toreceive and support control posts 45. These control posts 45 are adapted'jgto4 engage cams 46and 47 on the notched levers 28 and 29 and disengage these notched leversirom the arm 27 ofthe swinging plate.. 25. Coiled springs 48 and 49 are anchoredA at one end to the control wheel 41 and at'the other end to the arm 27 on theswinging plate 25. The sides of this plate, 'as at 50 and .5l-,fare of sulicient en- Alar ement and contour to supportthe-coiled e springs 48 and 49. when the springs are drawn around theledge of the plate.`

The operation. offthe particular embodiment vof the invention herein illustrated compriss'a' continued vibration of the fork 2 bytheenergi'zing ofthe solenoid 5 with proper alternating electric current whereby the vibration from the fork is transmitted through vthe connector straps 9 and 10 to the vibratory bands l5 uand llggAssuming one of-these bands (as'illustrated in Fig. 3) to i 42 and 44 in the control wheel.

' b'egunder tension the-"drive pulley v rotate around the ediOf-*that particular 17 will' band that is attachedto the straps 9 land 10. This rotation -turns the small pulley 39 which drivesthe control wheel 41 whereby the control`v wheel is slowly rotated in the same directionas the driving pulley 17, since the arm 27fofthe"oscillatory plate 25 is held by the notched lever 28. The continued rotation ci" the control wheel extends the coiled spring 49. This extension continues with'- the rotation of the control wheel until the control post 45 engages .the cam 46 which moves the notched llevergg28-outwardly.

and releases, the arm27; """The extended coiled spring 49 quicklyswings the arm 27 into engagement with the other notched lever 29 where the arm is locked, When this has happened,- the.,vibrating band 9 "is drawn taut and the band l() is relaxed. Because of the law of operation of-this type of-vibrating motor, .thepulley 17 immediately reverses its rotative action and thereby reverses the vdirection'of rotation of, the control wheel 41 which at once begins to extend the coiled. spring 48 and the action ot the parts is repeated. By increasing the angle between the posts 45, -as measured atl the axis of the control wheel, the number of revolutions of the drive pulley 17 Ain the oscillatory period is increased, whereaslby diminishing this said angle the period of revolutions is decreased. The said angle is decreased or increased by changing the control posts 45 in the row of control openings Vhile there are many nbvel features to this invention itis believedthat'the essence of the invention resides in the two vibrating bands cooperating with each side of the drive pulley and any suitable mechanism which renders first one band and then another effective to rotate the drivemmember.

Realizing that the present invention may be embodied in structures other than those specifically disclosed herewith it is my de- 'and devices for alternately tensioning said bands to cause alternate rotative movement of said pulley. l

2. A device of the character described, comprising in combination, a rotating member adapted to be oscillated, a pair of bands,

one extending in 'one' direction around said member, lthe other extending in the opposite directionaround said menber, means to produce vibration ofsaid bands, and devices to alternately4 tension said bands around said member whereby the tensioned band is effective to cause rotation 0f said member and whereby the alternating of the tension Aof@ the band causes said member to be driven first in one rotative direction and then in the other/rotative direction.

V 3. A device of the character described, comprising in combination, a member to be oscillated, a pair of vibrating bands one extending on each 'side of said member, means to vibrate said bands, a swinging anchoring member, means loperatively connecting the ends of said bands to said swinging member,

and devices for swinging the swinging memsin ber to tension rs't one of said bands and then the other. n 4. In -a device of the character; described1 in combmatlon, a member to be oscillated, a

'vibrating fork, a connector secured to Ysaid vibrating fork, a pair of bands anchored to said connector vand extending on each side Aof said'member to be oscillated, yielding means secured to the ends of said bands, and a swinging member to which said yielding means 1s anchored whereby when said vswinging means is operated the yielding means maybe alternately tensioned to alternately bring the bands into effective relation with the member to be oscillated whereby the said member is rotated first in' one direc.- tion and then in the other. direction.

5. In a device of the characterfdescribed, in combination, a member to be 'oscillated, a vibrating fork, connector means secured to each prong of said fork, vibrating bands anchored to said connector means and extending on each side of a member to be oscillated, andA devices for alternately rendering said bands eli'ectivc to drive said member whereby said member is driven in onefdirectioir and then in the other direction. 4

6. A device of the character described, comprising in combination, a vibrat-ing member, connector means secured to said vibrating member, a pulley to be oscillated, a pair of bands secured to said connector means and extending in opposite directions oneach side of said pulley, a swinging plate, springmeans to urge saidl plate to swing, holding means to prevent such swinging, and devices for releasing saidlfoldingmeans to enable said plate to swing under influence of said spring means.

7. In a device of the character described, in combination, a vibrating member, a pair of bands operatively connected with said vibrating member, a pulley adapted to be oscillated, one'of said bands beingeffective to drive said pulley in one direction and the other of said bands being efective'to drive said pulley in the other direction, means for determining which of said bands shall be operative, said last mentioned means comprising an. anchoring member to which the free ends of said bands are comiected,VY a control device, and adjustable means for adjusting the effective operation of said control device.

8. In a device of the character described, in combination, a vibrating member,v connector means secured to said Vibrating member, a pulley to be oscillated, a pair of bands secured to said connector means, and devices for alternately tensioning said bands, saidV devices comprising a control Wheel driven from said oscillating pulley and constructed to loperate mechanism for tensioning lil-st one of said bands and then the other.

9. A device of the character described, comprising in combination, a vibrating fork, driving bands connected with said vibrating fork, a member to be oscillated and around which said bands are adapted to pass, a

.swinging plate to which the free ends of said 'bands are connected, means to latch said plate in one direction, means tending to move said swinging plate in the opposite direction, and a ,control wheel for releasing said latch when said pulley has made a predetermined number of revolutions.

10. A device of the character described,

in combination, a member to be oscillated, driving mechanism for oscillating said member, a control wheel driven from the 1nember to be oscillated, a swinging plate, springs connected'to Asaid swinging plate and to.

said control wheel, latches adapted to hold said swinging plate against movement, latch operating pins mounted on said control `wheel and adapted to operate said latches to release said swinging plate to permit the'springs to operate saidv plate, and connections between said' swingingI plate and said driving mechanism whereby said oscil,

latory member is driven rst in one direction and then in the other direction. t

*11, A device of the character described, in'combination, a vibrating fork, a member to be oscillated, driving bands operatively connected with said fork and with said member to be oscillated, means for rendering first one of said bands and then the other operative to drive the member to be oscillated, said means comprising a' swinging *plateto which the free ends of the driving bands are anchored,control mechanism for determining the movement of said plate,

Ksaid control mechanism including a rotatind control wheel, latches for holding i said in combination, a vibrating fork, a device adapted to be o scillated, driving means between said fork and said device, and mecha'- nism' for rendering said driving means eff fective to rotate said device in one direc# tion for a predetermined number of revolutions and then rendering said driving mechanism efective to rotate said device a predetermined number of revolutions inl the other direction.

13. The method of producing oscillatory motion, which consists in vibrating a pair of bands; extending one band in one direction around the member to be oscillated; extending the other band in the opposite direction around the member to be oscillated; then alternately tensioning said bands to cause the motion in said bands to drive said member first in one direction and then in the other direction.. 

